#include <bits/stdc++.h>
//I hate CCF!
using namespace std;
typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
int randint(){
    mt19937 w{random_device{}()};
    return w();
}
int main(){
    freopen("arena.in","r",stdin);
    freopen("arena.out","w",stdout);
    int a;
    while(1){
        a=randint();
    }
    return 0;
}
